磁畴

书籍目录

1.Introduction

1.1 What are Magnetic Domains?

1.2 History of the Domain Concept

1.3 Micromagnetics and Domain Theory

2.Domain Observation Techniques

2.1 Introduction

2.2 Bitter Patterns

2.3 Magneto-Optical Methods

2.4 Transmission Electron Microscopy (TEM)

2.5 Electron Reflection and Scattering Methods

2.6 Mechanical Microscanning Techniques

2.7 X-ray, Neutron and Other Methods

2.8 Integral Methods Supporting Domain Analysis

2.9 Comparison of Domain Observation Methods

3.Domain Theory

3.1 The Purpose of Domain Theory

3.2 Energetics of a Ferromagnet

3.3 The Origin of Domains

3.4 Phase Theory of Domains in Large Samples

3.5 Small-Particle Switching

3.6 Domain Walls

3.7 Theoretical Analysis of Characteristic Domains

3.8 R6sum6

4.Material Parameters for Domain Analysis

4.1 Intrinsic Material Parameters

4.2 Mechanical Measurements

4.3 Magnetic Measurements

4.4 Resonance Experiments

4.5 Magnetostriction Measurements

4.6 Domain Methods

4.7 Thermal Evaluation of the Exchange Constant

4.8 Theoretical Guidelines for Material Constants

5.Domain Observation and Interpretation

5.1 Classification of Materials and Domains

5.2 Bulk High-Anisotropy Uniaxial Materials

5.3 Bulk Cubic Crystals

5.4 Amorphous and Nanocrystalline Ribbons

5.5 Magnetic Films with Low Anisotropy

5.6 Films with Strong Perpendicular Anisotropy

5.7 Particles, Needles and Wires

5.8 How Many Different Domain Patterns?

6.The Relevance of Domains

6.1 Overview

6.2 Bulk Soft-Magnetic Materials

6.3 Permanent Magnets

6.4 Recording Media

6.5 Thin-Film Devices

6.6 Domain Propagation Devices

6.7 Domains and Hysteresis

Colour Plates

References

Textbooks and Review Articles

Symbols

Acronyms

Author Index

Subject Index

作者简介

《磁畴》是唯一一部研究生磁畴理论的专著，内容全面，权威，系统性强，包括了许多未曾谋面的许多材料。磁畴理论是用量子理论从微观上说明铁磁质的磁化机理。所谓磁畴，是指磁性材料内部的一个个小区域，每个区域内部包含大量原子，这些原子的磁矩都象一个个小磁铁那样整齐排列，但相邻的不同区域之间原子磁矩排列的方向不同，如图所示。各个磁畴之间的交界面称为磁畴壁。宏观物体一般总是具有很多磁畴，这样，磁畴的磁矩方向各不相同，结果相互抵消，矢量和为零，整个物体的磁矩为零，它也就不能吸引其它磁性材料。也就是说磁性材料在正常情况下并不对外显示磁性。只有当磁性材料被磁化以后，它才能对外显示出磁性。

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